#include "apue.h"
#include <dirent.h>

int main(int argc, char *argv[]) {
	DIR *dp;
	struct dirent *dirp;

	if (argc != 2) {
		err_quit("usage: ls directory_name");
	}

	if ((dp = opendir(argv[1])) == NULL) {
		err_sys("can't open %s", argv[1]);
	}

	while((dirp = readdir(dp)) != NULL) {
		printf("%s\n", dirp->d_name);
	}

	closedir(dp);
	exit(0);
}
